[Chimera-users] Electron density maps

[lecan]

 Hello Chimera's users,

 I would like to know if there are a way to see density maps from .mtz 
 files with chimera. I have tried opening a .mtz file after opening a 
 .pdb file, but I got the next error message after choose CCP4 density 
 map in the Type Selection window:

 Error reading file abc.mtz format ccp4
 File size 631624 too small for grid size
 (1297373728,929300992,1145110528) and 64 bytes of
 symmetry operators

 Does anyone could telling me if what I'm trying to do is possible and 
 what is the way to do it?

 Thank you for your help,

 Luis L.